Combined transmission unit



Jan. 14, 1930. P. E. MATTHEWS COMBINED TRANSMISSION UNIT Filed June 23, 1928 2 Sheets-Sheet. 1

. iwc m Jan. 14, 1930. MATTHEWS 1,743,226

COMBINED TRANSMISSION UNIT Filed June 25, 1928 2 Sheets-Sheet 2 I vwemtoz:

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. $13 wva QHSQW Patented Jan. 14, 1930 oFFIcE PHILIP E. MATTHEWS, OF PLAINFIELD, NEW JERSEY, ASSIGNOR TO INTERNATIONAL MOTOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE COMBINED TRANSMISSION UNIT Application filed June 23,

The present invention relates to improved transmission constructions having a plurality of controls incidental to the operation thereof. In the particular construction in which the invention has been shown, a vehicle transmission has been provided with a secondary set of change speed gearing which is operated in conjunction with the primary or usual transmission gearing to effect multiple ranges of speeds.

With the added control lever for the secondary set, as Well as the usual gear shifting lever, emergency brake, and clutch pedal, considerable difliculty is experienced in providing a satisfactory and convenient mounting for such elements without increasing, materially, the number of parts or causing the cost of manufacturing and assembling the elements to be prohibitive.

An object of this invention is to provide a clutch housing construction which is formed to include the secondary change speed gears and to mount the controls mentioned above. By providing the bell housing of the clutch with suitable brackets and related structure, the housing and controls may be constructed as a unit and assembled in a single operation, corresponding to the assembling of the clutch housing in the usual manner.

The facility with which the entire device may be mounted will be quite apparent from the following description and further ob jects will appear as the invention is described in connection with the accompanying drawings, wherein:

Figure 1 is an end elevation of a clutch bell housing constructed in'accordance with the present invention.

Figure 2 is a view in section taken on line 22 of Figure 1, and looking in the direction of the arrows.

Figure 3 is a view in section taken on line 3-3 of Figure 2, and looking in the direction of the arrows.

Referring to the above drawings, a desig-,

nates the fly-wheel of an internal combustion engine provided with a clutch b of any de- 1928. Serial No. 287,738.

of speeds transmitted-to the propeller shaft and for reversing the direction of rotation thereof. This secondary transmission embodies a gear and clutch element 0 mounted on the extension of the drive shaft 6 and receiving the extremity of drive shaft 0' upon which is mounted slidable gear 0 The shaft 0 is connected through a suitable universal joint to any desired type of transmission and power is supplied to such transmission through the secondary transmission embodying the above elements and a countershaft 0 provided with gears 0 and 0 The sliding gear 0 may be moved into engagement with gear 0", thus causing the drive to be through the countershaft 0 When the clutch face of the sliding gear 0 engages the clutch face 0 the drive is directly from shaft 6 to shaft 0. Reverse countershaft c carries sliding gears c and 0 the former engaging gear 0 and the latter 0 to reverse the rotation of shaft 6.

The clutchbell housing cl is formed with and d prevent lubricant from the secondary transmission escaping into the clutch housing and the bearings in these'partitions are effectively sealed as clearly shown in Figure 2. The upper side of the housing (Z2 is provided with a closure 6 which supports the secondary gear shifting lever f. This lever is mounted pivotally in the closure 6 and moves slides 6 upon the notched shafts e Spring pressed pawls 6 cause the .slides e to be held in either position representing the conditions of driving when the power is transmitted from shaft 6 to shaft 0 and when transmitted through the countershaft 0 The closure e is provided with a flange 6 which is bolted to the upper portions of the partitions d and (Z as clearly shown in Figure 1.

The emergency brake lever is indicated at g and mounted in extension g of the closure e. The closure, in this manner, includes as a unit the emergency brake lever as well as the secondary gear shifting lever.

Formed on the housing 6Z2 is an extension h which consists of a hollow casing carrying slide shaft h for selecting and shifting the gears of the primary transmission. This.

5 casing is provided With an end closure h which serves as a bearing for the slide shaft,

the shaft being mounted at its other extremity in partition 72, of the casing h. Pivoted in the upper Wall of the casing h, is the primary 10 gear shiftinglever 2' having'guide fiangesi" carried upOn-the-upper-portion of thecasi-ng h. From Figure 3, it will be readily seen, that the lever 71 imparts both a rocking and" sliding movement of the shaft 71/.

15 A bracket is secured to the side of the casing 7L and serves to mount the clutch lever; j. Theusual plug 70 is provided for draining; the secondary. transmissionhousing and ;closu re as Well as aclosure plate 74-? for;such house ze ing.

Theclutch bell; housing is .provided} with; anopening clifor Which closure cl isrprd Vided This .closure carries a bracket d for mounting suitable control shaftsfortheve- EPJShiCle.

From-the-above description, it Will-,be'seen; that. the 7 clutch bell housing d carries as 1 a. unit therewith a secondary transmission ;in-. cluding areversing mechanism, the shifting- Qalever'for; theprimary transmission, the; emergency'brake lever rand the clutch lever These elements may be assembled upon the; casting forming the ,bellj housing and; the entire mountedvin asingle operation The;

nuniher of: parts necessary for; mounting these various elements: has been: greatly: re duced and the ease of manufacture andassem bling' increased; Although variouschanges V indesign and arrangement of parts may be 4 made, the; invention is:not: to be limitedysave:

as defined in the appended lcl-aim a I claimas myf-inventionz" a V A unitary clutch and transmissionhousing comprising; a; clutchxbell housing, a: comp art-e 451-,- mentcarried-bythe bell housing and .:adapted% toreceive a= transmission, apsecond compartel ment carried 'by-vthe first compartment adapted to receive a controlling means for -tl1'e trans-. mission, and a thirdicompartment carried-ibyu 5015 therfirst compartment and cadaptedpto receive. .2

a control for an additional, transmission This. specification signedgthisg 13th day-of. Jung-A3 D. 1928-. 55 PHILIP E3 MATTHENVSa 

